German speech synthesis by concatenation of non-parametric units. - Thomas Portele; Birgit Steffan; Rainer Preuß; Wolfgang Hess (EUROSPEECH, 1991)

HADIFIX - a speech synthesis system for German. - Thomas Portele; Birgit Steffan; Rainer Preuß; Walter F. Sendlmeier; Wolfgang Hess (ICSLP, 1992)